<template>
  <div id="app">
    <div class="left"></div>
    <div class="center"></div>
    <div class="right"></div>
  </div>
</template>

<script>

export default {
  name: 'App',
  components: {
  }
}
</script>

<style lang="less" scoped>
*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
#app {
  width: 100%;
  height: 100vh;
  display: flex;
  .left {
    flex: 1;
    background-color: green;
  }
  .center {
    flex: 1;
    background-color: pink;
  }

  .right {
    flex: 1;
    background-color: greenyellow;
  }
}
</style>
